Churn



(No Model.)

H. A. BURKE. 011mm.

Patented M21129, 1898.

UNITED TATES'v CHURN.

SPECIFICATION forming part of Letters Patent No. 601 ,427, dated March 29, 1898. Application filecl September 19, 1896. Serial No. 606,398. (No model.)

To all whom it may concern:

Be it known that I, HENRY A. BURKE, a citizen of the United States, residing at San Antonio, in the county of Bexar and State of Texas,have invented a new and useful Churn, of which the following is a specification.

My invention relates to churns, and has for its object to provide a simple and inexpensive construction of dasher adapted to supply air to the bottom of a churn-receptacle.

Further objects and advantages of this invention will appear in the following description, and the novel features thereof will be particularly pointed out in the appended claim.

In the drawings, Figure 1 is a perspective view of a churn constructed in accordance with my invention. Fig. 2 is a vertical section of the same. .Fig. 3 is a detail plan view, partly in section, of the dasher.

Similar numerals of reference indicate corresponding parts in all the figures of the drawings.

1 designates a base from which rises a standard 2, and 3 represents a stub-shaft adjustably mounted upon the standard to form a bearing for the driving-wheel 4. This stubshaft is provided with a shoulder 5 to bear against the opposite side, the intermediate portion or stem of the shaft extending through a vertical slot 7 in the standard.

8 represents a bracket secured to the upper end of the standard by bolts or similar fastening devices and provided at its upper side with horizontally-alined bearings 9 and 10, in which is mounted the axially-adjustable rotary shaft 11, carrying a gear 12, which meshes with a pinion 13 on the upper end of the dasher-staff l4; Said shaft 11 is fitted contiguous to the facing sides of the bearings with adjustable collars 15, held in place by means of thumb-screws 16, and it is obvious that said collars may be loosened to allow longitudinal adjustment of the shaft to take up lost motion caused by wearing of the intermeshing gear and pinion.

Adjustably fitted upon the rearwardly-extending portion of the shaft 11 isa double pulley 17, having grooved faces 18 and 19 of large and small diameter, either of which is adapted to receive the belt 20, which encircles the driving-wheel 4, and it is obvious that the driven shaft 11 receives different rates of motion, according to which face of the pulley the belt engages. Stop or limiting pins 21 and 22 are located, respectively, contiguous to the bearing 10 and at the outer extremity of the driven shaft to prevent accidental displacement of the double pulley, and the latter is fitted with a collar 23, having a thumb-screw 24, by which the pulley may be secured with either of its faces in the plane of the driving-wheel.

Detachably secured to the lower end of the dasher-staff 14 by means of a socket 25 and set-screw 26 is the dasher 27, which consists of a tubular body 28, terminating at its lower end in a fiat circular head 29, which is located near the bottom of the receptacle 30, arranged upon the base '1. A staff 14 extends axially through the hollow body and head of the dasher and is seatedat its lower end in a socket 31 in the bottom of the receptacle, and it is obvious that the dasher may be arranged at any desired distance from the bottom of the receptacle by the adjustment of the collar 25 upon the staif.

The head of the dasher consists of upper and lower disks 32 and 33, between which are arranged the segmentally-curved wings 34, which terminate short of each other at their outer extremities to formair-discharge ports 35 of reduced width, due to the concentric curvature of the outer portions 36 of the wings, and inasmuch as the cavities between the wings are in communication with the interior of the tubular body 28 and the latter is open at its upper end to form an inlet-port 37, the

dasher being adapted to rotate in the direction indicated by the arrow in Fig. 3, it is obvious that a partial vacuum will be created contiguous to the dasher and will be supplied by air admitted through the tubular body. This introduction of air facilitates the separation of the oil from the milk and thus increases the rapidity of the operation of churning. r

A further advantage of the construction resides in the fact that the staff 14 is held from vertical displacement when the churnis in operation by the bevel-gear 12, which is arranged in the plane of one side of the pinion 13, and while the dasher may be loosened and removed from the receptacle by sliding the same upwardly upon the staff, the latter being of even diameter throughout, it will be seen that the staff itself cannot be dismounted from its bearing in the bottom of'the receptacle except by loosening the collar 15, which is contiguous to the rear bearing 10, and sliding the driven shaft rearwardly to remove the gear 12 from the plane of the pinion 13.

Various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

Having described my invention, what I claim is- I In a churn, the combination with a vertical dasher-shaft, and the churn-receptacle; of the dasher comprising a vertical tubular body portion having at its upper end a top opening and a shaft-collar adjustably fitted to the dasher-staff, and a circular hollow air-distributing head fitted to the lower end of said 

